Furnace-setting.



P. L. CROVVB.

FURNACB SETTING.

APPLICATION FILED 00T. 2s, 190e.

lPatented Mar. 17, 1914.

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P. L. CROWE. FURNAGE SETTING.

APPLICATION FILED 00T. 28, 1908. 1,090,285.

Patented Mar. 17, 1914.

.llllllllIv/Q PAUL L. CROWE, OF JERSEY CITY, NEW

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JERSEY.

FURNAGE-SETTING.

Specification of Letters Patent.

Patented Mar. 1?, 1914;.

Application filed October 28, 1908. Serial No. 459,890.

To all whom it may concern Be it known that l, PAUL L. Cnown, citizen ofthe United States, and resident o-f Jersey City, in the county of Hudsonand State of New Jersey, have invented a certain new and usefulFurnace-Setting, of which the following is a specification.

My invention relates to a furnace setting for stickers, and the objectis to increase the effectiveness, simplicity and positivcness of thisclass of stokers, and also the capacity of the stokers.

Another object is to increase the capacity of a boiler with a furnaceequipped with a stoker.

Another object is to increase the radiation of the heat by an archsetting in co-action with a stokcr frame setting.

Another object is to provide the greatest economy in setting the stokerand furnace permanently, to prevent any leakage, and excess of air alongthe longitudinal edges of the frame and the brick work.

Another object is to provide combined flat and crown arches inconjunction with the stokers.

Another' obj ect is to prevent the formation of clinkers upon the wallsof the furnace.

Another object it to prevent the clinkers clinging to the walls at theentrance of the fuel port. v

Another object is the construction of the skewbacks for supportingarches.

Another object is to provide a combination of operative movements in afurnace with a chain grate stoker causing` an undu lating grate surfacethereby producing the free burning of coking and caking coal.

Referring to the drawing: Figure 1 is a cross sectional elevation of mvdouble furnace and arches on line ai m, Fig. 2, looking in the directionof the arrow. Fig. 2 is a vertical sectional view on line A A Fig. 1.Fig. 3 is a plan view of Fig. 1 on line ff/ y, showing one half of thearches in full. Fig. It shows a cross sectional view of a furnace havinga single arch therein, said arch viewed from outside the furnace afterthe front 'plate is removed looking into the furnace. Y Fig. 5 is adetached view of the travcling chain with grate bars attached showing avertical link within the groove of a wheel and a horizontal link ridingover another wheel at a lower level. Fig. 6 is a perspective front view'of the skewback. Fig. 7 is another perspective view of the back of theskewback. Fig. S `is a bottom view of the skewback.

The furnace 2 is provided Awith channel irons 23 and angle iron et,suitably positioned in the furnace and supporting cross rods on whichthe grooved sheaves (i, and rollers T, are placed. Over the sheavestravels the chain S, to which is attached the grate hars 9. The chainconsists of verti .alflinks 10. and horizontal links 11, and when theverti-A cal links 10, travel over the sheaves (see Fig'. 5), they willbe slightly higher than the horizontal links 11, or vice versa. rl`hegrate bars being attached to the links of the chain will rise and falltherewith as the chain travels over the grooved sheaves (i. This motionof the bars is made evident by the fact that a bar at one end isconnected to a vertical link and at the other to a horizontal link. Theobject accomplished by thus rocking the bars, is that coal is constantlykept loose in its travel under the arches and within the furnace.

The furnace 2 is provided with arches, single as shown in Fig. 4. or induplication as in Figs. 1, 2 and 3. The single span in Fig. 4t is viewedfrom outside the front of the furnace. Fig. 1 is viewed from the iusideof furnace. The spans 12, 13 and 11tare identically alike, the centralskewbaek being used for duplication of arches. The front of each ofthese arches is constructed horizontally flat crosswisc of furnace,whichis illustrated in Fig. t viewed from above the arch and in Fig. l. Afrombelow the arches. At the base of the arch and on each. side thereof islocated special skcwbacks 1.9, which are constructed the full depth ofthe arch in one piece. These skewbac ts 19 are positioned in the wall ofthe furnace just inside of the front. thereof. On the inside of the fuelport at. each end under the arch 1Q, and supported by channel irons 3,are located the clinkcr blocks Q1. These blocks are constructed of iron,and they are removably positioned upon the channel irons or equivalent.supports. These blocks are shaped to conform on their upper surface tothe inward slant of thc arch (see lines 24, Fig. 2). The object of theseclinker blocks is to protect the wall of the furnace at these pointsfrom the heat thereof so that the life of said wall is substantiallyprolonged: and the nature of the iron of the blocks prevents theclinkers that naturally form in the ignition of the fuel, from adheringto said blocks, thus allowing the fuel to pass onward toward the rearfree from the effects of the adhesion of clinkers. Along the side,inside of the furnace above the channel irons 3, the furnace wall isspaced away from said iron several inches designated as offsets 26, inFigs. l. These spaces are filled up with brick under the arches, butbeyond. the arches, rearward, these spaces are left open for the ashesto collect therein for the purpose of protecting the side walls of thefurnace from the heat thereof, and also preventing the clinkers formingt-hereon until the rear of the furnace is reached. The surface of thegrate being higher than the fioo-r surface of the space between the saidgrate and the wall of the furnace, aids in preventing the clinkersadhering to the said walls, and also protects the upper portions of thechannels 3. It will be observed that this furnace and stoker settingobtains the best result that can be accomplished to prevent the air frompassing otherwise than through the fuel.

As shown in Fig. 3 which illustrates a plan of a furnace in which ismounted a plurality of stokers, the arch 12, in its construction overeach stoker, and designated 153-44., is supported in the center or wherethe arches 13 -14E come together by a double skewback 27 (see Figs.1-2-6-7-8), which is supported by a central clinker block 28, restingupon the central I beam 29, which in turn rests on the central standard30 of the furnace, suitably supported within the same.

The central skewback 27 is constructed as shown in Figs. 6, 7 and 8. Thefront end, it will be seen, being triangular in shape; the base 32extending inwardly about half the length of the said skewback, from thispoint the underside 33 thereof extends rearward on an upward incline tothe rear of the skewback. The rear face 34 of the skewback block is alsopyramidally shaped. Along the longitudinal surface 35, of the block thesame is beveled downward and inward as shown at 36 Figs. 6-78, to thethickness of the clinker block 28 (see Fig. l). `When the two arches arebrought together on the central skewback (see Fig. l), the said archesrest against the bevel longitudinal surfaces 35. The object of the bevelportions 3G, is to effect a more perfect and substantial radiation, andis removed from clinker formation. in the process of burning the fuel.To further increase the efliciency in the burning of low grades of fueland especially the coking qualities of coal in conjunction with theuneven motion of the rocking grate surface of the bars, the arches12B-14, are lengthened substantially by a combined extension consistingof a single span 37 (see Figs. l-3) positioned against the rear end ofthe shorter arches lwlt, and suitably connected forming thereby acomplete three span arch. ln this furnace setting the width of thestoker is contracted sufliciently to allow the grate bars to travelbetween the walls of the furnace, giving sufficient space between themand the side walls above the grate surface for their 'completeprotection from the adhesion of clinkers thereon. The single and doublespans of the arches i2, 13 and lllare each provided in front with anangle' iron 40, which is supported by the front plate 4t2 -of thefurnace, and securely held thereto by bolts or other means.

`What I claim is: Y

l. In a furnace setting, a furnace comprising front rear and side walls,said side walls provided with offsets, channel irons mounted along saidside walls adjacent the osets, an I beam mounted in the center of saidfurnace, a central clinker block mounted on said I beam, end clinkerblocks mounted on said channel irons in the front portionof saidfurnace, a central skewback mounted upon said central clinker block, endskewbacks mounted in said side walls of the furnace and an arch mountedin said furnace against the said end skewback in the front portion ofsaid furnace, arches l3-lt adjoining said arch, said arches 13-14supported by end and central skewbacks.

2. In a furnace setting a furnace comprising front, rear and side walls,said side walls being provided with offsets, channel irons mounted alongsaid side walls adjacent the offsets, an IE beam .mounted in the centerof the furnace, stands for supporting said beam, end clinker blocksmounted on the channel irons and having an upwardly inclined portion,and a central clinker block mounted on said l beam and having downwardlyinclined projecting portions.

3. A furnace setting comprising front, rear and side walls said sidewalls having off sets, channel irons with inward anges extending alongsaid side walls, an beam supported within said furnace, standardssupporting the said beam, end clinker blocks mounted on said channelirons, having upward inclined surfaces, a central clinker block mountedon said beam, and having downward inclined surface, end skewbacksmounted in said side walls, a central skewback mounted on said centralclinker block, a single arch mounted within the furnace upon the saidend skewbacks, said single arch inclined upwardly, a double arch mountedwithin the furnace and joined to the said single arch, said double archinclined upwardly said double arch supported in the center by the saidcentral skewback, and at its ends by the end skewbacks.

el. In a furnace setting a furnace comprising front, rear and sidewalls, said side walls being provided with offsets, channel ironsmounted along said side walls adjacent the oilsets, end clinker lblocksmounted on the channel irons and having an upwardly inclined portion,end skew-hacks mounted in said side walls, an arch mounted within thefurnace upon said end skew-backs said arch inclined upwardly, said archhaving a straight front portion, and a crowned rear portion.

5. In a -furnace setting, a furnace comprising front, rear and sidewalls, said side walls provided with oiisets, channel irons mountedalong said side walls adjacent the offsets an arch mounted within saidfurnace, skew backs mounted in said side walls against which said archrests, end clinker blocks mounted on said channel irons below the arch,said arch provided with a straight 'ront portion and a crowned rearportion.

Signed at Jersey City in the county ot' Hudson and Stato of New Jerseythis 26th day of ct., A. D. 1908.

PAUL L. CROWE.

Witnesses ROBERT J. MCCABE, ANNA E. DIETZ.

Copies of this patent may Commissioner of Iatents.

Washington, D. C.

